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Amongst the following, the total number ...

Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is:
`{:(KCN,K_(2)SO_(4),(NH_(4))_(2)C_(2)O_(4),NaCI),(ZN(NO_(3))_(2),FeCI_(3),K_(2)CO_(3),NH_(4)NO_(3)),(LiCN,,,):}`

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Amonst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is: {:(KCN,K_(2)SO_(4),(NH_(4))_(2)C_(2)O_(4),NaCI),(Zn(NO_(3))_(2),FeCI_(3),K_(2)CO_(3),NH_(4)NO_(3)),(LiCN, , ,):}

Amongst the following, the total number of compounds whose equesous solution turns red litmus paper blue is: {:(NaCN,KCl,CH_(3)COONH_(4),NaH_(2)PO_(4),ZnCl_(2), Na_(3)PO_(4)),(Fe(NO_(3))_(3),Na_(2)CO_(3),NH_(4)Cl,NaHCO_(3),Na_(2)C_(2)O_(4),Na_(2)HPO_(4)):} Given: {:("Acid",ka_(1),ka_(2),ka_(3)),(H_(3)PO_(4),10^(-3),10^(-8),10^(-12)),(H_(2)CO_(3),10^(-6),10^(-11),-),(H_(2)CO_(3),10^(-2),10^(-5),-):}

Find the number of aqueous solution which turn litmus paper blue. (a) NH_(4)OH (b) NaOH (c) NH_(4)CI (d) CH_(3)COONa (e) NaHSO_(4) (f) HCI

Find the total number of compounds which produce N_(2) gas on heating. NH_(4)NO_(3),NH_(4)NO_(2),CH_(3)CO ONH_(4),(NH_(4))_(2)CO_(3),NH_(4)IO_(3),(NH_(4))_(2)Cr_(2)O_(7),(NH_(4))_(3)PO_(4)

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